ALSA: hda - Avoid touching mute-VREF pin for IDT codecs

Some HP laptops use a pin VREF for controlling the mute LED, and such a
pin shouldn't be powered off.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 3 insertions, 1 deletions

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index f3658658548e..f4f4ebeed9ea 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -4441,7 +4441,9 @@ static int stac92xx_init(struct hda_codec *codec)
                 int pinctl, def_conf;
 
                 /* power on when no jack detection is available */
-                if (!spec->hp_detect) {
+                /* or when the VREF is used for controlling LED */
+                if (!spec->hp_detect ||
+                    (spec->gpio_led > 8 && spec->gpio_led == nid)) {
                         stac_toggle_power_map(codec, nid, 1);
                         continue;
                 }